Leuco derivative of the gallocyanin series.



UNITED STATES PATEN OFFICE- \YJLHELM LOMMEL, OF l'ELBERFE LD GERMANY,ASSIGXOR TO FARBENFABRlKEN VORM.

FRIEDR. BAYER & CO1, O F ELBERFl J LD GERMANY, A CORPORATION OF (1ERMANY.

LEIICO DERIVATIVE OF THE GALLOCYA NIN SERIES.

Specification of Letters Patent. I

Patented ul 2.1, -190s.

Application filed March 31.19081 Serial No. 424,324.

To all whom "it-may concern: i

Be it known that I, W'iL-I-IEIJM LQMMEL, doctor of philosophy, chemist,citizen of the German Empire, residing at Elberl'cld, Gerninny, Kingdomof Prussia, have invented new'and useful Improvements in New lieucoDerivatives of the Gallocy'anin Series, of

which the following is a. specification.

I have found'i lmt new and Valuable lcucocompoundsof the gallocyiniinseries can be obtained by treating dycstull's of this series with cornounds containing the glycin radical (-NI H COOH) such as phenylglycin,naphthylglycin, suninophenylglycin, diulkylaniinophenylglycinoxyphenylglycin, sultonic or carboxylic acids of these products or thelike. i i

The new leucocom pounds are in the shape oftheir hyd r ,icliloridseasily soluble in water -With a yellowish brown to brownish rcd color.(in adding sodium acetate or sodium carbonate to these solutions theyellowishgreen to bluish-green bases separate out which oxidize onexposure to air. They produce'in dyeing or prin ting fronr blue toviolet valuable shades.

Tho foilowing e.\-.1,mples will serve to furtion, the parts being thusobtained can be used without further purification for dyeing orprinting. 'hcn printed on cotton Withchromc mordnnts tlns solutionfurnishes 1mvy-blue shades. The

solution of the hydrochlorid of the new leucocompound has a brownish-redcolor. By the addition of sodium acetate the leucocomoundseparzttes outin the shape of a yellowish-green product which turns blue on exsulfuricacid with a. brown color which turns blue by tho addition of sodiumnitrite.

ExamplelI.----ln :1 vessel. )rovidcd withn FCllllX condcnscr 21mixturcol parts oi gallocyanin (obtained from nitrosodil'ncthylanilinand gallic. acid), 31 arts of )hcnylgl vci ni, '24 parts oflrvdrochloric acid 0' 19 Be. and 300 parts of water is heated to boilingfor about l hours until all the dyestufi' has entered into reaction. Thenew lcucocoinpound produces a dark-blue chrome-lake on cotton. i

Other glycins, e. g. meta-mninophcnvlglyein, ctc. other giillocyenins orother diluting. agents may be employed. The free bases of thcgallocyanins can also be used. Q

[loving now d cscribcd my invention and in what manner the same'is to beperformed what I claim as new and desire to secure by licttcrs Patentis:-- v

- 1. The herein-described process for pros ducing new leucocompound-s'of the gallocyan'in series, which )rocess consists in treating Y posureto air. It is soluble in concentrated 50 dyestuffs of the g2 locynninseries with coinical, sub- "the shape of yellowish-green to bluishgreencompounds by adding sodium acetate to the aqueous sol utions: andproduce when printcd with chromium compounds on cotton from blue toviolet shades, substantially as 4. The liereiiEdcscribcd newlcucocompound of the gallocynnin series obtainable by heating cclestinblue with phcnylglyoin, which new lcucocompound in the shape of its,hydrochlorid dissolves inwatcr with a. brown-' ish-red color, a.yellowish-green product being seperat ed hy theltdditi ih of sodiumaeetate, dlssolves m coileentrated sulfuric acid with a.

In testimony whereof have hereunto set brown color turnmg" bl b th dd't'f wltnesses' sqdlum gmtr lte; gm produ es when print d' r WILHELMLOMMELwlth ehroxmum compounds on cotton navy- Witnesses:

, blue shades, substantiall as described. A Or'ro Kome,

WM. WASHINGTON BRUNSWIOK..

It ish e reby oer tifiad th at in Lettet e Patent No. 893,855, grantedJuli 21, 1908, upon the opplication of Wilhelm Lommel, of Elberfeld,Germany, for an improvement in liedeo Derivatives of the G alloeya ninSeries, an error appears in the printed spec ifieation requiringcorrection, follows: in line 80, page 1. after the word substantially,th e'word as should be inserted; and that the said Letters Pateht sho'uld beread with -'this con ection therein that the same may co'nfofm tothe record of the case in the Patent Otfiee. I I

Signed and sealed this 8th dul 6r September, A. 1)., 1908.

[BEALI V l l 0. c. BILLIN GS, Acting Commissioner of I'M ems.

.my hahd in the presence of twp 'subscribih g' seperat ed hy theltdditiih of sodium aeetate, dlssolves m coileentrated sulfuric acid with a.

In testimony whereof have hereunto set brown color turnmg" bl b th dd't'f wltnesses' sqdlum gmtr lte; gm produ es when print d' r WILHELMLOMMELwlth ehroxmum compounds on cotton navy- Witnesses:

, blue shades, substantiall as described. A Or'ro Kome,

WM. WASHINGTON BRUNSWIOK..

It ish e reby oer tifiad th at in Lettet e Patent No. 893,855, grantedJuli 21, 1908, upon the opplication of Wilhelm Lommel, of Elberfeld,Germany, for an improvement in liedeo Derivatives of the G alloeya ninSeries, an error appears in the printed spec ifieation requiringcorrection, follows: in line 80, page 1. after the word substantially,th e'word as should be inserted; and that the said Letters Pateht sho'uld beread with -'this con ection therein that the same may co'nfofm tothe record of the case in the Patent Otfiee. I I

Signed and sealed this 8th dul 6r September, A. 1)., 1908.

[BEALI V l l 0. c. BILLIN GS, Acting Commissioner of I'M ems.

.my hahd in the presence of twp 'subscribih g' Correction in LettersPatent bio-893,855.

It is hereby oertified that in Letters Patent No. 893,855, granted July2], 1908, upon the application of Wilhelm Lommel, of Elberfeld, Germany,for an improvement in Leuco Derivatives of the Gallocyauin Series, anerror appears in the printed specification requiring eorrection, asfollows: In line 80, page 1. after the word substan tially,

case in the Patent Ofiice.

Signed and sealed this 8th day of September, A. D., 1908.

[SEAL] O. C. BILLINGS,

Acting Commissioner of Iuienfs.

